Posted by **suzy** on Tuesday, November 28, 2006 at 11:47am.

an ultralight plane had been flying for 40 min when a change of wind direction doubled its ground speed. the entire trip of 160miles took 2h. how far did the plane travel during the first 40 min?

Let V be the initial ground speed and 2V be the final ground speed, in miles per minute.

The length of time travelled at the higher speed was 120 - 40 = 80 minutes

Total distance travelled =

160 = 40 V + 80*(2V) = 200 V

V = 0.8 miles/minute

Inital distance travelled at velocity V = 0.8 miles/min* 40 min = 32 miles

Final distance travelled at velocity 2V = 80*1.6 = 128 miles

## Answer This Question

## Related Questions

- math - a small plane flying into the wind takes 3 hrs 20 min to complete a ...
- math - a small plane flying into the wind takes 3 hrs 20 min to complete a ...
- Math - A small plane flying into the wind takes 3h 20 min to complete a flight ...
- Math - A small plane flying into the wind takes 3h 20 min to complete a flight ...
- Physics - A plane is flying west at 214 km/h. The wind is blowing south at 108km...
- Physics - Could someone please review my answers and tell me if I am on the ...
- Physics - 1. A small plane can travel at 200 km/h in still air. If a 50.0 km/h ...
- MATH - 1. A boat traveled 210 miles downstream and back. The trip downstream ...
- Math Ms. Sue please help - Flying to Kampala with a tailwind a plane average ...
- Math - Me, again... Please help me. Thank you. Assume a plane is flying directly...

More Related Questions